[erlang-bugs] Fwd: exit(self(), normal) causes calling process to exit

Daniel Luna <>
Wed Nov 28 20:50:49 CET 2012


I withdraw my comment.  It's still true that it works when trapping
exits, but apparently you shouldn't have to.

>From the docs:

"If Reason is the atom normal, Pid will not exit."

I call bug on this.

Cheers,

Daniel

On 28 November 2012 13:07, Daniel Luna <> wrote:
> I replied on StackOverflow, but the gist of the problem is that you
> don't trap exits.
>
> 1> self().
> <0.32.0>
> 2> process_flag(trap_exit, true).
> false
> 3> exit(self(), normal).
> true
> 4> self().
> <0.32.0>
> 5> flush().
> Shell got {'EXIT',<0.32.0>,normal}
> ok
>
> Cheers,
>
> Daniel
>
> On 28 November 2012 11:50, Stavros Aronis <> wrote:
>> After some speculation on stackoverflow I think I will report this here as
>> well. (I am directly copying the content of the question.)
>>
>> I am playing around with the exit/2 function and its behavior when self() is
>> used as a Pid and normal as a Reason.
>>
>> Erlang R15B03 (erts-5.9.3) [source] [64-bit] [smp:8:8] [async-threads:0]
>> [hipe] [kernel-poll:false]
>>
>> Eshell V5.9.3  (abort with ^G)
>> 1> self().
>> <0.32.0>
>> 2> exit(self(), normal).
>> ** exception exit: normal
>> 3> self().
>> <0.35.0>
>>
>> Shouldn't it be the case that only a 'normal' exit message is sent to the
>> shell process, so there is no reason to exit?
>>
>> Similarly:
>>
>> 4> spawn(fun() -> receive Pid -> Pid ! ok end end).
>> <0.38.0>
>> 5> exit(v(4), normal).
>> true
>> 6> v(4) ! self().
>> <0.35.0>
>> 7> flush().
>> Shell got ok
>> ok
>>
>> But:
>>
>> 8> spawn(fun() -> exit(self(), normal), receive _ -> ok end end).
>> <0.43.0>
>> 9> is_process_alive(v(8)).
>> false
>>
>>
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>> 
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>>


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